Speaking personally, AS3 is the first version of the language where you can really apply the kinds of practices you'd use in other, full-fledged programming languages.

Action Script 3.0 in Flash allows you to create all kinds of fully interactive applications such as dynamic websites and computer games. Also, AS3.0 is an object-oriented programming language; if you ...

Scaleform has announced that its new GFx 4.0 UI tech will begin supporting Flash 10 ActionScript 3.0, as well as featuring significantly improved performance on previous iterations. The new ...